Axle seal



FIG. 1 is a side view of an axle seal showing my design;

FIG. 2 is a top view of an axle seal showing my design;

FIG. 3 is a bottom view of an axle seal showing my design; and,

FIG. 4 is an isometric view of an axle seal showing my design. 

The ornamental design for an axle seal, as shown and described. 